Gua sha Gua sha (刮痧; guāshā) is abrading the pores and skin with pieces of clean jade, bone, animal tusks or horns or sleek stones; right until purple places then bruising protect the realm to which it is done. It regulates the compounds and professional criteria for TCM practitioners. https://clayton5m46s.blogrelation.com/29406085/facts-about-chinese-medicine-books-revealed